Tower-spar.



E. A. z J. l?. GASKILL TUWER SPAR.

APPLICATION FILED APR. SJ 1913 WTIVESSES:

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5.1 f ahah E. A. & J. Pz GASKILL.

TOWER SFAR.

APBLIUATION rum uns, 191s.

Patented Jan. 6, 1914.

2 SHEETS-SHEET 2.

WTNESSES' JNVENTORS.

A TRA/EY.

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EDWIN A. GASKILL AND JOSEPH F. GASKILL, OF LANEVILLE. WEST VIRGINIA.

TOWER-SPAR.

Specification of Letters Patent.

Application filed Aprn a, 1913.

lltatented Jan. tl, ttltild. Serial No. 758.636.

To oZZ whom it may concern Be it known that we, EDWIN A. GASKILL and JOSEPH F. GASKILL. citizens ot the United States, both residing;r at Laneville, county of Tucker, and State of TWest Vir* gioia,` have jointly invented an Improved Tower-Spar, of which the following is a specication.

This invention, broadly stated, relates to spars used in connection with overhead cable way systems. and has more particular relation to the providing of a novel form of spar particularly adapted for use in conjunction with the overhead skidding of logs.

The principal object, of the present invention, may be said to reside in the providing of a tower spar, the parts of which have telescopic relation with one another whereby the spar may be readily raised and lowered vertically with respect to the tower, means being present to hold the spar in raised and lowered position. l

)t further object, of the present invention, is to provide a relatively fixed tower provided with a guide way through which is adapted to he moved vertically, a tubular spar capable ot rotatable movement around itsown axis. said vertical and rotary movements of the spar being possible, irrespective oi.2 its position without the necessity of castingn loose the guy ropes and main cable from the spar cap;

.it still- Further object of the present in venton is to provide a tower spar mounted upon traction wheels, whereby the same may ,be readily moved from place to place, the parts of said tower spar having telescopio relation with one another.

still tui-ther object, of the present invention, is to provide a tower spar. provided with a. platform the parts being so arranged. connected and constructed that the spar may be lowered vertically with respect lo the tower; so that. workmen on the platform, may conveniently have access to the spar cap without castingr loose the main :able and guy ropes and other tackle usually secured to a spar cap.

A still further object, of the present in.

vention, is to provide a tower sparot novel construction, whereby simplicity. etlieiency and cheapness in the overhead skiddmg ot logs is effected.

I-beams which form a guide way.

@ther and further objects of the present invention. relate to the providing of gcneral detailsl of construction and arrange ment of parts.

The invention consists ot' the improvements hereinafter described and finally claimed.

The nature, characteristic features and scope of the invention will be more readily understood from the following description taken in connection with the accompanying drawings forming part hereof and in which:

`Figure 1, is a view in front elevation of a tower spar embodying the invention, the spar being shown in raisedl or operative position. Fig. 2, is a view in plan partly sec tioned of the tower spar said figure beingr a section taken approximately on the llne 2-2 ot' Fig. 1. Fig. 3, is a similar view taken approximately on the line 3--3 of Fig. l, Fig. Lt. is a similar view taken approximately on the line 4-4 of Fig. l, Fig'. 5, is a fragmentary view in section, illustrating the manner o't sustaining the spar in raised position. Fig. (l, is a fragmentary view in elevation illustrating the spar in its lowered position, and Fig. 7, is a detail view of one of the shift'able bolts shown in Fig.

lVhile the tower of the present invention is particularlyl adapted for use in conjunction with the overhead sliidding ot' logs. any reference herein appearing to such use, is merely for illustrative purposes as the tower spar ofthe invention is adaptable to various overhead cable way systems.

Referring to Fig. l, of the drawings, l0, designates ay generally rectangular skeletonlilie relatively ixed supportingr structure on tower ot any practical construction which carries at. its top a tixed platform l1. For convenience and easy handling, the tower 10, is shown as beingr fixed upon a flat lar 1Q, mounted upon traction wheels 13. Within the tower l0, and having iixed rclation therewith, are. vertically disposed rails 11i, shown in the drawings as beingr As clearly shown in Fig. l, this guide way is arranged intermediate the top and bottom of the tower 10. Connecting the bottoms of the rails 14, are plates, channel beams or other suitable mediums 15, forming a stop or rest, the purpose of which will presently appear. l

l/Vithinthetower 1'0, and immediately adjacent the top ot' the guide way, is located a sustaining device for retaining in operative position the spar to be presently described.

horizontally' disposed endwise shittable bolts 1-, see Figs. 2i, and 5. Each bolt is slotted upon its underside toy receive a toothed raclr17, pinions 18, mounted upon a suitably supported shaft 19, being present ffor interineshing with said racks 17.

In order to properly' support and lreepl the 4bolts in alinement, a box-like st ructure 20, open top and bottom and having secured to one side sleeves or guides 20a, is present. This structure has fixed relation with the tower 10, and is provided with apertures 21, in its side walls through which said bolts work' and 'the sleeves 20a, are slotted to accommodate the pinions 18. A convenient way `of operating the bolts 16,

is by ny ins of a sprocket chain 22, which connects with a sprocket wheel 23,' fixed to the shaft 19, vand a.v sprocket wheel 24, pro.-

vided with an operating handle whichv wheel is j'ourn'aled to the tower 10, adjacent the door of the car 12.

Having telescopic relation with and positioned tor vertical movement through the guide way within the tower 10, is a combined base, 'spar and cap, which parts are designatedrespectively 25, 26, and 27. For convenience, these partswill hereinafter be ternied' the spar. In' the `specific insta-nce shown in the drawings, this spar is" constructed in accordance with the base, patented to us under date of November 19,

i 1912, and numbered 1,044,771; the s par, as

shown and described in our application, Seriali-JN0. 686,183,1iled March 25, 1912, and the cap, as shownand described in our ap-4 plication, for Letters Patent, Serial No. 703,506,A vled June 413, 1912. Gbviously, however, other forms of spars including bases and caps may be advantageously used if desired. 'In order toraise and llower the spar with respect to the tower, practice has dictated' that the following parts are .eiiicient.:'-a pairc pulley blocks 28, see Figs. 1, and 2, are secured to the tower 10, preferably immediately beneath the platform 11, at points diagonally opposite one.Y another through which. pulley blocks, is passed a sling 29, the-freev endsof which are suit ably secured as at v80, to the spar 26, the bight of' said sling connectingwith a 'three sheave fall bloclr a, which block and'l a similar block 31, securedto the car 12, are reered by a fall line 32, which line in turn passes to the drum of a shieldingl engine,

,not shown in the drawings. means of' In the specific instance shown, this sustaining device comprises a pair of n l able anchorage not shown.

this connection of parts,` the spar 26n1ay` be readily raised' to operative -position as shown ,inFig 1. Located upon the car 12, directly beneath the tower 10, is a tensioning engine 33, passing from the drum of which, ythrough an opening in thebase 25, and up through the tubular spar 26, and thence over a sheave 34, in the cap 27, is the maincable 35, which passes to a suit- Immediately behind the sheave 34, and connected to the sparare two suitably 4rested foursheave fall blocks a, connecting with a Split anchorage. Thisriggingis to counter-act the f strain upon the spar of the main cable. 35.' Passing from guy vdrums 87, arran ed at the tower corners, upon the' door of t e car 12, are vguy ropes 38, which pass through openings 39, in the platform 11, to and over sheaves 40, carried by the cap 27, and thence to suitable -anchorages not shown.

When the spar 26, is in lowered position,

that isi with its base 25,' resting upon the plates 15, at the bottoms ofuthe guide way, see Fig. 6, riggers working upon the platform-11, can readily adjust to position the L main cable 35, the guy `ropes 88, andother rigging required at'the spar top. The skidding engine may then be operated to elef vate the spar to the position shown in Fig. 5, through the connections hereinbefore described. ln this elevated position of the spar, the sprocket wheel 2K1, is operated to shift to place beneath the spar base A25,

'through the mechanism described, the bolts 16. Thus, when the various guy ropes are tightened; the spar 26, is operatively positioned. When it be desired tomove the tower spar from one position to another, the spar 26, is lowered, as will be readily understood, to the position. shown invFig. 6, without disconnecting from the'spar cap, the maincable or 'guy ropes. The lowering of the spar 26, throws the center of gravity of the tower spar as a vwhole relatively low and makes it perfectly safe and practicable iicv to move the car12, to desiredposition. It y may-be stated at -this time, that by the use of the spar construction as set forth in our said patent and applications for patents,

the spar may be rotated around its own' axis and with respect tothe guy vring 31,' wi'tli out interfering with the'main cable or guy ropes at the spar top which obviously is ad- -v i vantageous.

Having now .described the nature v and objects of the invention and hpw the `saine is to be operated, what we claim as new an desire to obtain by Letters Patent is:

A portable tower spar for use in an overhead' cable-way system comprising a tower, a spar, including itscompleinental base and cap operatively fitted as a unit for up and down movement withinthe tower, said spar being constructed to permit of 'the free pasn I sage therethrough of a main cable, means In testimony whereof, We "have hereunto for elevatlnzg'sald spar, means operatively signed our names.

onnected with the towel' capable of being EDWIN A GASKLL shifted into the mthof the s im for rei'aning; same in elevilted positionland means in JOSEPH F GASIULL dependent of the shiftable means connecting Witnesses;

with the spar cap for properly :dining the WVM. LLNOCH7 spin' in its elevated position. WM. ALLEN BRoWN, Jr. 

